officials are meeting with the head of palestinian factions in cairo. trying to secure a commitment from these factions to cease all hostilities and rocket fire into israel. from an israeli perspective. that is a game changer. it potentially means two of israel's largest population centers are now within reach of palestinian rockets. >> we have more than 4 million people. we have to protect. and again, again. you see. let's go. let's go. >> the fear is, if these talks in cairo fail, and they are unable to get a cessation of hostilities, a ground invasion could be imminent. from everyone we have been speaking to in gaza in terms of officials and palestinians, politicians and others, the people of gaza would suffer the most. that would be a disastrous consequence for inhabitants. >>> coming up next, president obama is headed overseas. we'll have a preview of his trip and update on the so-called fiscal cliff. >> nbc bay area received help for the food drive from a few stars. one human. one dragon. we'll explain coming up. >>> a south bay teenager, credited